7139390051 has 4 divisors (see below), whose sum is σ = 7152071592. Its totient is φ = 7126708512.

The previous prime is 7139390033. The next prime is 7139390129. The reversal of 7139390051 is 1500939317.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7139390051 - 2¹⁴ = 7139373667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7139389987 and 7139390014.

It is not an unprimeable number, because it can be changed into a prime (7139390021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6339926 + ... + 6341051.

It is an arithmetic number, because the mean of its divisors is an integer number (1788017898).

Almost surely, 2^7139390051 is an apocalyptic number.

7139390051 is a deficient number, since it is larger than the sum of its proper divisors (12681541).

7139390051 is a wasteful number, since it uses less digits than its factorization.

7139390051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12681540.

The product of its (nonzero) digits is 25515, while the sum is 38.

The square root of 7139390051 is about 84494.9113911601. The cubic root of 7139390051 is about 1925.5451360802.

The spelling of 7139390051 in words is "seven billion, one hundred thirty-nine million, three hundred ninety thousand, fifty-one".